Harley's my stepsister, and she hates my guts for a mistake I made a long time ago. I go undercover to protect her from the person who wants to retaliate against me, but I don't expect Harley to fall for Guy, the man I became when I put on my mask. For the first time in a long time, Harley lets me get to know her, and she gets to know the real me, even if it can't be me. I can be with her as long as I'm Guy. Will she be my last mistake?Last Mistake is a dark, forbidden romance novella.